20123620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1$

素因数の和:181

約数の個数: 96

約数和(自身を含む): 49787136

約数和(自身を除く): 29663516

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 41, 44, 46, 55, 82, 92, 97, 110, 115, 164, 194, 205, 220, 230, 253, 388, 410, 451, 460, 485, 506, 820, 902, 943, 970, 1012, 1067, 1265, 1804, 1886, 1940, 2134, 2231, 2255, 2530, 3772, 3977, 4268, 4462, 4510, 4715, 5060, 5335, 7954, 8924, 9020, 9430, 10373, 10670, 11155, 15908, 18860, 19885, 20746, 21340, 22310, 24541, 39770, 41492, 43747, 44620, 49082, 51865, 79540, 87494, 91471, 98164, 103730, 122705, 174988, 182942, 207460, 218735, 245410, 365884, 437470, 457355, 490820, 874940, 914710, 1006181, 1829420, 2012362, 4024724, 5030905, 10061810, 20123620]

約数ペア:

[(1, 20123620), (2, 10061810), (4, 5030905), (5, 4024724), (10, 2012362), (11, 1829420), (20, 1006181), (22, 914710), (23, 874940), (41, 490820), (44, 457355), (46, 437470), (55, 365884), (82, 245410), (92, 218735), (97, 207460), (110, 182942), (115, 174988), (164, 122705), (194, 103730), (205, 98164), (220, 91471), (230, 87494), (253, 79540), (388, 51865), (410, 49082), (451, 44620), (460, 43747), (485, 41492), (506, 39770), (820, 24541), (902, 22310), (943, 21340), (970, 20746), (1012, 19885), (1067, 18860), (1265, 15908), (1804, 11155), (1886, 10670), (1940, 10373), (2134, 9430), (2231, 9020), (2255, 8924), (2530, 7954), (3772, 5335), (3977, 5060), (4268, 4715), (4462, 4510)]